Heater fan



FIG. 1 is a front, top and right side perspective view of a heater fanshowing my new design;

FIG. 2 is an enlarged front elevation view thereof;

FIG. 3 is an enlarged right side elevation view thereof, the left sidebeing a mirror image of that shown;

FIG. 4 is an enlarged top plan view thereof;

FIG. 5 is an enlarged bottom plan view thereof; and,

FIG. 6 is an enlarged rear elevation view thereof.

The ornamental design for a heater fan, as shown and described.